3120-21-914-1859 BEARING,PLAIN,SELF-ALIGNING Index 9340-21-914-1861 GLASS,SAFETY,SINGLE PLATE

National Stock Number:
9340-21-914-1860

Federal Supply Class:
9340

National Item Identification Number:
219141860

Description:
GLASS,SAFETY,SINGLE PLATE

Detail:
A TRANSPARENT ITEM CONSISTING OF PRESTRESSED PIECES OF GLASS, WITH STRAIGHT PARALLEL SURFACES. PRESTRESS RESULTS FROM HEATING UP TO FUSING TEMPERATURE FOLLOWED BY UNIFORM QUENCHING ON BOTH SIDES. QUICK SHRINKING PRODUCES A HIGH SURFACE TENSION WHICH ONLY CAN BE BROKEN DOWN BY A HEAVY MECHANICAL LOAD. THE SHATTERED GLASS CRUMBLES INTO SPHERICAL NON-SPLINTERING PIECES. IT MAY BE HEAT RESISTANT OR TINTED AND IS GENERALLY USED WHERE SAFETY CHARACTERISTICS SUCH AS IN MOTOR-VEHICLE WINDOWS ARE REQUIRED. EXCLUDES GLASS, LAMINATED.


Manufacturer Information:
522-003-0480RS15WELDCO BEALES MANUFACTURING LIMITED


Techincal Specification:
EDGE TYPEBEVELED
FIRST ANGLE3.4687 DEGREES MINIMUM AND 3.5000 DEGREES MAXIMUM
FIRST CORNER RADIUS2.5625 INCHES NOMINAL
MATERIAL TRANSPARENCYCLEAR
MATERIALGLASS SAFETY
PLY QUANTITY1
OVERALL LENGTH48.9687 INCHES MINIMUM AND 49.0000 INCHES MAXIMUM
OVERALL THICKNESS0.2500 INCHES NOMINAL
OVERALL WIDTH22.4687 INCHES MINIMUM AND 22.5000 INCHES MAXIMUM
SPECIAL FEATURESONE CORNER CUT DIAGONALLY, 7.4374 IN. MIN. AND 7.4687 IN. MAX. LENGTH BY 7.7499 IN. MIN AND 7.7812 IN. MAX HIGH


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